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James Barnett 2016-04-22 20:11:06 -05:00
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99_grub-config.hook Executable file → Normal file
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README.md
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@ -16,14 +16,15 @@ threshold in the snapper configuration file.
Additionally the package provides a hook to regenerate your GRUB configuration
file after every pacman transaction. This is useful when using
[grub-btrfs](https://aur.archlinux.org/packages/grub-btrfs-git/).
[grub-btrfs](https://aur.archlinux.org/packages/grub-btrfs-git/). If you don't
use grub-btrfs, then you should remove `99_grub-config.hook` after installation.
## Installation
Install [the package from the
AUR](https://aur.archlinux.org/packages/snap-pac/).
Optionally install
Optionally, install
[grub-btrfs](https://aur.archlinux.org/packages/grub-btrfs-git/) to populate
your GRUB menu with the ability to boot into snapshots.
@ -32,11 +33,11 @@ your GRUB menu with the ability to boot into snapshots.
**Use pacman (and AUR helpers) as normal and watch snapper do its thing.** No
bash scripts for you to call. No bash aliases to setup.
Because these are pacman hooks, it doesn't matter how you call pacman (whether
directly, through an AUR helper, or an alias)---snapper will create the
Because these are pacman hooks, it doesn't matter how you call pacman—whether
directly, through an AUR helper, or an alias, snapper will create the
snapshots whenever pacman is asked to install, upgrade, or remove a package. The
description for the snapshot is the pacman command that called the hook in the
first place.
specific pacman command used is noted in the snapper description for the
snapshots.
### Example
@ -60,42 +61,40 @@ Installing the `nano` package as normal:
(1/1) snapper pre snapshot
:: Processing package changes...
(1/1) installing nano [######################################] 100%
:: Running post-transaction hooks...
(1/1) snapper post snapshot
:: Running post-transaction hooks...
(1/2) snapper post snapshot
(2/2) generate GRUB configuration file
And here are the snapshots:
# snapper -c root list -t pre-post | tail -n 1
1033 | 1034 | Fri 22 Apr 2016 01:54:13 PM CDT | Fri 22 Apr 2016 01:54:14 PM CDT | pacman -S nano |
What changed (see the man page for what each symbol means)?
What changed?
# snapper -c root status 1033..1034
+..... /etc/nanorc
c..... /etc/snapper/.snap-pac-pre
+..... /usr/bin/nano
+..... /usr/bin/rnano
+..... /usr/share/doc/nano
+..... /usr/share/doc/nano/faq.html
+..... /usr/share/doc/nano/fr
+..... /usr/share/doc/nano/fr/nano.1.html
+..... /usr/share/doc/nano/fr/nanorc.5.html
+..... /usr/share/doc/nano/fr/rnano.1.html
+..... /usr/share/doc/nano/nano.1.html
+..... /usr/share/doc/nano/nanorc.5.html
+..... /usr/share/doc/nano/rnano.1.html
c..... /usr/share/info/dir
+..... /usr/share/info/nano.info.gz
+..... /etc/nanorc
c..... /etc/snapper/.snap-pac-pre
+..... /usr/bin/nano
+..... /usr/bin/rnano
+..... /usr/share/doc/nano
+..... /usr/share/doc/nano/faq.html
+..... /usr/share/doc/nano/fr
+..... /usr/share/doc/nano/fr/nano.1.html
+..... /usr/share/doc/nano/fr/nanorc.5.html
+..... /usr/share/doc/nano/fr/rnano.1.html
(I truncated the above output, but it continues...) You can also do `snapper
diff` in the same way---I'll spare you that one.
I truncated the above output, but it continues. See the manpage for snapper to
see what each symbol means. You can also do `snapper diff` in the same
way—I'll spare you that one.
To undo the upgrade:
# snapper -c root undochange 1033..1034
create:0 modify:3 delete:100
And `nano` is now gone:
And `nano` is now gone, along with all the files it changed:
$ pacman -Qi nano
error: package 'nano' was not found